What causes a SPN 3606 code?

SPN 3606 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a SPN 3606 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 3606 active.

How do I fix SPN 3606?

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

J1939 SPN

SPN 3606

J1939 SPN 3606 — Body/Chassis parameter

What it means

J1939 SPN 3606 is a generic parameter code indicating a communication error or invalid data received from the Body Control Module (BCM) or Chassis Controller regarding specific body equipment status.